The M-PESA agent who works in this shop is part of a vast network of small-time vendors. Screengrab by NPR/YouTube hide caption

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Screengrab by NPR/YouTube

Dial M For Money: Can Mobile Banking Lift People Out Of Poverty?

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The singer Alsarah: "Sudanese people said I wasn't Sudanese enough. Arabs said I wasn't an Arab. Americans said I wasn't American. I used to be like, 'I don't belong anywhere! Now I'm like you're all mine. All my countries, you're all mine." Ryan Kellman/NPR hide caption

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Ryan Kellman/NPR

Samples from this 17th century Lithuanian mummy were found to house samples of variola, the virus that causes smallpox. Kiril Cachovski/Lithuanian Mummy Project hide caption

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Kiril Cachovski/Lithuanian Mummy Project

A Mummy's DNA May Help Solve The Mystery Of The Origins Of Smallpox

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Babu, 8, works at a brick factory in Narayanganj, Bangladesh. KM Asad/LightRocket via Getty Images hide caption

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KM Asad/LightRocket via Getty Images

Study: Child Laborers In Bangladesh Are Working 64 Hours A Week

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A Stabbing, A Possible Ebola Outbreak, And A 'Time Bomb'

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A hamlet between the towns of Tsihombe and Ambovombe, in the most drought-stricken area in southern Madagascar. Most families in the region have resorted to eating wild fruits and tree leaves. Courtesy of Jeanluc Siblot hide caption

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Courtesy of Jeanluc Siblot

Emmie de Wit, who usually works in a Biosafety Level 4 Lab, spent time in less secure labs in Liberia during the Ebola outbreak in West Africa. Above, she prepares to test Ebola patient blood samples. Courtesy of NIAID hide caption

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Courtesy of NIAID

Yemen Crisis: Humanitarians Need 'Unconditional Access' To Reach The Food-Insecure

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U.N. Secretary-General Ban Ki-moon, pictured during a 2014 visit to Haiti to inaugurate a sanitation campaign. On Thursday, he issued an apology that Haitians have been demanding for six years. Hector Retamal /AFP/Getty Images hide caption

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Hector Retamal /AFP/Getty Images